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A man is watching from the top of tower a boat speeding away from the tower. The boat makes an angle of depression of 45° with the man’s eye when at a distance of 60 meters from the tower. After 5 seconds, the angle of depression becomes 30°. What is the approximate speed of the boat, assuming that it is running in still water?
  • a)
    32 kmph
  • b)
    36 kmph
  • c)
    38 kmph
  • d)
    40 kmph
  • e)
    42 kmph
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A man is watching from the top of tower a boat speeding away from the ...

Let AB be the tower and C and D be the two positions of the boats.
Then, ∠ACB = 45, ∠ADB = 30 and AC = 60 m
Let, AB = h
Then,


Hence, required speed
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A man is watching from the top of tower a boat speeding away from the tower. The boat makes an angle of depression of 45° with the man’s eye when at a distance of 60 meters from the tower. After 5 seconds, the angle of depression becomes 30°. What is the approximate speed of the boat, assuming that it is running in still water?a)32 kmphb)36 kmphc)38 kmphd)40 kmphe)42 kmphCorrect answer is option 'A'. Can you explain this answer? for Bank Exams 2025 is part of Bank Exams preparation. The Question and answers have been prepared according to the Bank Exams exam syllabus. Information about A man is watching from the top of tower a boat speeding away from the tower. The boat makes an angle of depression of 45° with the man’s eye when at a distance of 60 meters from the tower. After 5 seconds, the angle of depression becomes 30°. What is the approximate speed of the boat, assuming that it is running in still water?a)32 kmphb)36 kmphc)38 kmphd)40 kmphe)42 kmphCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Bank Exams 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A man is watching from the top of tower a boat speeding away from the tower. The boat makes an angle of depression of 45° with the man’s eye when at a distance of 60 meters from the tower. After 5 seconds, the angle of depression becomes 30°. What is the approximate speed of the boat, assuming that it is running in still water?a)32 kmphb)36 kmphc)38 kmphd)40 kmphe)42 kmphCorrect answer is option 'A'. Can you explain this answer?.
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